Molded surface of a concrete product



FIG. 1 is a front elevational view of a molded surface of a concrete product, according to our new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a front perspective view thereof.

The broken lines in drawing views are included for the purpose of illustrating portions of the concrete product that form no part of the claimed design. 

The ornamental design for a molded surface of a concrete product, as shown and described. 